RT Journal Article
T1 The Avoidance of the Little Sibling of the Big Rip Abrupt Event by a Quantum Approach
A1 Albarran, Imanol
A1 Bouhmadi-López, Mariam
A1 Cabral, Franciso
A1 Martín Moruno, Prado
AB We address the quantisation of a model that induces the Little Sibling of the Big Rip (LSBR) abrupt event, where the dark energy content is described by means of a phantom-like fluid or a phantom scalar field. The quantisation is done in the framework of the Wheeler–DeWitt (WDW) equation and imposing the DeWitt boundary condition; i.e., the wave function vanishes close to the abrupt event. We analyse the WDW equation within two descriptions: First, when the dark energy content is described with a perfect fluid. This leaves the problem with the scale factor as the single degree of freedom. Second, when the dark energy content is described with a phantom scalar field in such a way that an additional degree of freedom is incorporated. Here, we have applied the Born–Oppenheimer (BO) approximation in order to simplify the WDW equation. In all cases, the obtained wave function vanishes when the LSBR takes place, thus fulfilling the DeWitt boundary condition.
PB MDPI
SN 2075-4434
YR 2018
FD 2018-02-09
LK https://hdl.handle.net/20.500.14352/12543
UL https://hdl.handle.net/20.500.14352/12543
LA eng
NO Ministerio de Economía y Competitividad (MINECO)/FEDER
NO Gobierno Vasco
NO Fundação para a Ciência e Tecnologia (FCT)
DS Docta Complutense
RD 15 may 2024